21445521545110 has 24 divisors (see below), whose sum is σ = 41799732529680. Its totient is φ = 7918346416032.

The previous prime is 21445521544919. The next prime is 21445521545167. The reversal of 21445521545110 is 1154512554412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6344827170 + ... + 6344830549.

It is an arithmetic number, because the mean of its divisors is an integer number (1741655522070).

Almost surely, 2^{21445521545110} is an apocalyptic number.

21445521545110 is a deficient number, since it is larger than the sum of its proper divisors (20354210984570).

21445521545110 is a wasteful number, since it uses less digits than its factorization.

21445521545110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12689657752 (or 12689657739 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 21445521545110 in words is "twenty-one trillion, four hundred forty-five billion, five hundred twenty-one million, five hundred forty-five thousand, one hundred ten".